Carton



May 7, 1968 E. L. ARNESON CARTON 3 Sheets-Sheet l Wffl Ida/Z72 izzx/zaiok and jii lgd Jan. 24, 196

E. L ARNESON May 7, 1968 CARTON Filed Jan. 24. 1966 5 Sheets-Sheet 2 fwezfl'n [(21002 Z. (#7266072, @I W W94 May 7, 1968 E. L. ARNESON CARTON 5 Sheets-Sheet 3 INC/6722 0": Ida/572 i. 527%650 72,

:L w m Filed Jan. 24, 1966 United States Patent 3,381,877 CARTON Edwin L. Arneson, Hackensack, N.J., assignnr to Federal Paper Board Company, Inc., Bogota, N.J., a corporation of New York Filed Jan. 24, 1966, Ser. No. 522,465 11 Claims. (Cl. 22921) This invention relates to packaging and is more particularly concerned with improvements in a container which has a body of tubular shape with the top and bottom of non-uniform configuration and which is adapted for packaging of products of various kinds.

It is a general object of the invention to provide an improved container which is especially adapted for fabrication from a blank of paperboard or similar bendable sheet material which is cut and scored to provide, when set up, a tubular body with an integral bottom end wall, the body having a cross section at the top thereof with a perimeter defined at least in part by curved lines, and, at the bottom, having a cross section with a perimeter defined by a series of straight lines which also define the perimeter of the bottom end wall,

It is a more specific object of the invention to provide a container which is adapted to be fabricated from a single blank of paperboard or the like cut and scored so as to divide the same into a bottom wall forming central section and two side wall sections of generally rectangular outline which are integrally connected to oppositely disposed edges of the bottom wall section and glue flaps adapted to hinge on straight lines extending from the ends of the hinge lines connecting the bottom wall section and the side wall sections for connecting portions of the bottom and side wall sections when the carton is set up.

It is another object of the invention to provide a tubular container which is closed at one end by a panel integral with the side wall which is hingedly connected to the bottom edge of the side wall along a series of straight hinge lines whereby the bottom panel may have straight peripheral edges forming a square, rectangular, hexagonal or other polysided shape.

It is a further object of the invention to provide a tubular container which has a cross section at the top with a perimeter, at least a portion of which is curved and which is closed at the bottom by a bottom wall panel hinged at its periphery to the side wall along straight lines and with the side wall having upwardly bowed scores which co-operate with oppositely disposed straight bottom edges to form fiat panel sections in the side walls immediately above the bottom hinge lines which panel sections are inclined upwardly and merge with outwardly curved portions of the container side wall.

Another object of the invention is to provide a one piece, generally rectangular blank of paperboard or similar sheet material for fabricating a container of the type which is characterized by upstanding side wall forming panels integrally connected at their bottom edges to a bottom wall panel along straight, parallel hinge lines, the blank being cut and scored on lines which are spaced on opposite sides of the transverse center line of the blank, so as to divide the blank into a central bottom wall forming section and two side wall forming sections, the side wall forming sections extending from parallel, hinge forming score lines which define two opposite sides of a bottom wall forming panel, the central section being cut along the sides of the blank and scored so as to divide from the bottom wall panel, which has its perimeter defined by straight score lines, glue flaps for connecting the bottom wall panel to bottom marginal portions of the side wall panels between the hinge forming score lines when the container is set up, and score lines in the side wall forming panels which extend transversely of the blank and in outwardly bowed relation in the direction of the ends of the blank, which are adjacent the hinge lines connecting the central and end sections of the blank and which have their ends terminating at or adjacent the corresponding ends of the hinge lines.

These and other objects and advantages of the invention will be apparent from a consideration of the container which is shown by way of illustration in the accompanying drawings wherein:

FIGURE 1 is a perspective view of a container body in set-up condition which embodies therein the principles of the invention;

FIGURE 2 is a vertical section taken on the line 22 of FIGURE 1, the view showing the top closure lid in position for application to the open top of the container;

FIGURE 3 is a horizontal section taken on the line 33 of FIGURE 2;

FIGURE 4 is a plan view, to a smaller scale, of a flexible paperboard blank employed in fabricating the container, the view illustrating the manner in which the blank is died out, creased and preliminarily glued;

FIGURE 5 is a perspective view of a modified form of the container;

FIGURE 6 is a horizontal section taken on the line 66 of FIGURE 5;

FIGURE 7 is a vertical section taken on the line 77 of FIGURE 6;

FIGURE 8 is a plan view, to a smaller scale, of the paperboard blank employed in fabricating the container of FIGURE 5, the blank being died out, creased and preliminarily glued;

FIGURE 9 is a perspective view of another form of container which incorporates features of the invention;

FIGURE 10 is a vertical section taken on the line 1010 of FIGURE 9;

FIGURE 11 is a horizontal section taken on the line 11-11 of FIGURE 9; and

FIGURE 12 is a plan view, to a smaller scale, of the cut, scored and preliminarily glued paperboard blank which is employed in fabricating the container of FIG- URE 9.

The container which is illustrated at 10 in FIGURE 1, will be best understood by reference to the blank employed and the manner in which the container is fabricated from the same. Referring first to FIGURE 4, the container 10 is fabricated from a flat blank 11 of flexible paperboard, of suitable gauge or thickness. The blank 11 is subdivided into a bottom wall forming central section 12 and two side wall forming sections or panels 13 and 13 which are of identical construction. The bottom wall forming panel 12 is separated from the two side wall panels 13 and :13 by hinge forming scores 14 and 14' which are parallel and spaced equal distances from the opposite ends of the blank 11. The score lines 14 and 14- are of equal length and are centered relative to the longitudinal center line of the blank which is indicated at a-a. They have a length in the transverse direction of the blank of approximately one-third of the bottom forming edges of the two wall panels 13 and 13', which edges are defined by cutting lines 16, 17 and 16', 17' extending from opposite ends of the hinge lines 14 and 14', respectively. Each of the cutting lines or edges 16, 17, 16 and 17' has a length corresponding to the length of the score lines 14 and 14'. The two blank sections 13 and 13 are cut on outwardly diverging diagonal lines 21, 22 and 21', 22 at the ends of the transverse cutting lines or edges 16, 17 and 16', 117, as shown. Score lines 23 and 23' extend in outwardly and oppositely bowed relation from the ends of the hinge lines 14 and 14' and score lines of like character indicated at 24, 25 and 24', 25 extend in the panels 13 and 13 from opposite ends of the transverse cutting lines or edges 16, 17 and 16, 17'. The bottom wall forming panel 12 has corresponding ends of the hinge lines 14 and 14' connected by pairs of outwardly extending, converging score lines 26, 26' and 27, 27, each of which has a length corresponding to the length of the hinge lines 14 and 14 and each of which defines the inner hinge forming edge of one of the generally triangular shaped wall connecting glue tabs 28, 28 and 29, 29'. The score lines 26, 26' and 27, 27' constitute bottom edge forming hinge lines along which. the bottom edges 16, 16' and 117, 17 of the panels 13 and 13' are connected in forming the container, as illustrated in FIG- URE 5. The glue tabs 28, 28 and 29, 29 have a size and shape corresponding to the area encompassed by the bowed score lines 24, 24' and 25 and 25' and the associated edges 16, 16, 17, 17 of the side wall panels 13 and 13' so as to underlie the same when the container is set up as in FIGURlES l to 3. The blank 11 as cut and scored, is symmetrical about its longitudinal and transverse center lines aa and b-b.

In fabricating the container 10 from the blank 11 of FIGURE 4, glue tabs 28, 28 and 29, 29 are provided with an adhesive on the outside faces thereof while one of the wall panels -13 or 13' is provided with an adhesive on the glue flap forming margins thereof as indicated on the panel 13'. The adhesive may be a heat activatable type which is intially applied and dried on the blank. The blank 11 is formed or folded to bring the two side wall panels 13 and 13 into upright position relative to the bottom panel 12 with the adhesive coated margins of the panel 13' overlying the margins of the panel 113 after which the seals are set by pressure. In the forming operation the glue tabs 28, 28' and 29, 29' are preferably folded inside the side wall panels 13 and 13. However, they may be folded outside the same, if desired. The top edge of the side wall panels 13 and 13 may be curled to form a bead 34 thereon. The folding and forming operation leaves the side walls of the container with an inward taper in the direction of the bottom thereof as shown in FIGURE 2.

The finished container 10 has a single panel bottom wall of hexagonal shape which is connected in hinged relation to the side walls about the periphery thereof on the straight hinge lines 14, 14, 26, 26', 27 and 27 and a small side wall portion extending upwardly towards the open end of the container from each of the hinge lines is in a fiat plane inclined upwardly and outwardly of the vertical axis of the container and merges at its curved upper edge into the cylindrical side wall which extends to the upper open end of the container. A cover member 36 of plastic or other material with a depending rim 37 may be provided for closing the open upper end of the container 10 and may have an inwardly extending locking shoulder 38 for co-operating with the head 34.

A modified form of the container is illustrated at 40 in FIGURE 5 which is fabricated from a paperboard blank 41 cut and scored as shown in FIGURE 8. The blank 41, which is symmetrical about transverse and longitudinal center lines, is divided into a center bottom wall forming section or panel 42 and two generally rectangular side wall forming sections or panels 43 and 43' of identical size and shape at opposite ends of the blank. The panel 42 is separated from the panels 43 and 43 by parallel, transverse score lines 44 and 44' equally spaced on opposite sides of the transverse center line c-c. The score lines 44 and 44 each have a length somewhat less than half the width of the blank and cutting lines 45, 46 and 45', 46' extend from their opposite ends which define the bottom edges of the remainder of the two wall forming panels, the edges 45, 46 and 45, 46 in each instance being inclined somewhat in the direction of the side edges of the blank and toward the transverse center line c-c as shown. The bottom wall panel 42 is scored on the two parallel, longitudinally extending score lines 47. and 48 which are of the same length as score lines 44 and 44, which extend between corresponding ends of the latter and which form hinge lines for connecting flaps or tab members 50 and 51 cut from the blank at opposite sides of the square center panel 42 which is adapted to form the bottom wall of the container when it is set up, with the tab members 50 and 51 adapted to connect the two side edges of the panel 42, which are defined by the score lines 47 and 48, to the bottom margins of the side wall forming panels 43 and 43. The two side wall forming panels 43 and 43 are scored on the lines 53, 54, 55, 56, 57 and 53', 54', 55', 56', 57 with the score lines 53, 53 and 54, 54 extending at a slight angle from the ends of the score lines 47 and 48. The score lines 53, 54 extend to the points of intersection of the outwardly bowed score line 55 with the adjoining, outwardly bowed score lines 56 and 57 while score lines 53' and 54' extend in like manner to the points of intersection of the outwardly bowed score line 55' with the adjoining score lines 56' and 57'. The glue flaps or tabs are cut so that the size and shape thereof corresponds approximately to the area encompassed by the score lines 44, 53, 54 and 5S and the corresponding areas between the score lines 56, 56' and 57, 57' and the bottom edges of the container when set up. The length of the score lines 53, 54 and 53, 54 may, of course, be varied.

The blank 41 may be folded and glued in the same manner as the blank 11 so as to produce the container of FIGURE 5 with the bottom thereof being square and the side wall tapering upwardly toward the top which is circular in cross section with a diameter at least as great as the diagonal dimension of the square bottom.

The form of the container shown in FIGURES l to 4 may be modified to include in the side wall panels corner forming score lines corresponding to the score lines 53, 54 and 53, 54' which are incorporated in the form of the container shown in FIGURES 5 to 8 with the outwardly bowed some lines moved a distance in the direction of the top of the container equal to the length of the corner forming score lines and the connecting glue tabs or flaps being shaped and increased in size to correspond to the areas encompassed between the outwardly bowed score lines and the associated bottom edges of the container. A somewhat tighter and stronger joint can be obtained by such construction.

Another form of container incorporating features of the invention is illustrated at 60 in FIGURE 9 which is fabricated from a paperboard blank 61 cut and scored or creased as shown in FIGURE 12. The blank 61, which is symmetrical about transverse and longitudinal center lines, is divided into a center bottom wall forming section or panel 62 and two generally rectangular side wall forming sections or panels 63 and 63' at opposite ends of the blank. The center panel 62 is separated from the panels 63 and 63' by parallel, transverse score lines 64 and 64' which are equally spaced on opposite sides of the transverse center line d-d. The score lines 64 and 64' are of equal length and parallel cutting lines 65, 66 and 65', 66 extend from their opposite ends which define the bottom edges of the remainder of the two wall forming panels 63 and 63'. The center panel 62 is scored on the two parallel. lines 67, 68 which extend longitudinally of the blank and connect corresponding ends of the transverse score lines 64 and 64' and which form hinge lines for rectangular connecting flaps or tab members 70 and 71 cut from the blank at opposite sides of the rectangular center panel 62, the latter being adapted to form the bottom wall of the container when it is set up, with the flap members 70 and 71 being adapted to connect the two edges of the panel 62, which are defined by the score lines 67 and 68, to the bottom margins of the side wall forming panels 63 and 63'. The two side wall forming panels 63 and 63 are scored on the lines 73, 74 and 73', 74' with the oppositely disposed score lines 73, 74 and 73, 74 extending in diverging relation from the ends of the score lines 67 and 68, respectively, to the opposite ends of the blank. The transverse score line 64 and the longitudinal score lines 73 and 74 define the bottom and side edges of a relatively wide side wall panel 75 in the blank section 63 while the score lines 73 and 74 separate from the panel 75 two relatively narrow side wall panels 76 and 77 extending along the side edges thereof. In a like manner the transverse score line 64' and the longitudinal score lines 73 and 74 define the bottom and side edges of a wide side wall 75 in the blank section 63, of the same size and shape as panel 75, and the longitudinal score lines 73' and 74 separate from the panel 75 two side wall panels 76' and 77 which have a dimension transversely of the blank somewhat larger than the corresponding side wall panels 76 and 77 in the opposite blank section 63. The points of intersection of the transverse score line 64 with the longitudinal score lines 73 and 74 are connected by an outwardly bowed score line 78 which extends into the panel 75 and in like manner the points of intersection of the score line 64 and the score lines 73 and 74' are connected by an outwardly bowed score line 78' extending into the panel 75'.

The blank 61 may be folded with the side wall panels 76, 76' and 77, 77' overlapped and adhesively connected in the same manner as the blanks 11 and 41 using an appropriately shaped forming mandrel and associated elements so as to produce the container of FIGURE 9 with the bottom thereof being rectangular and the side wall extending upwardly toward the top which has two relatively short, oppositely disposed, parallel straight edge portions and two oppositely disposed, outwardly curved or bowed edge portions connecting corresponding ends of the straight edge portions. The overlapped panels 76, 76 and 77, 77' form that rectangular side wall portions connected along the hinge lines 73, 73' and 74, 74' to the panels 75 and 75, the latter forming larger side walls which are outwardly bowed at the top and which have flat planar sections at the bottom between the bottom edges 64, 64' and the upwardly bowed scores 78, 78'. The top of the container 60 may be closed by a metal end member 80 having a center opening 81 with a friction cap 82, the member 80 having its peripheral edges crimp sealed to the top edges of the paperboard body of the container as shown in FIGURE 9. This form of container body may be produced from lighter gauge paperboard than similar paperboard containers having straight side walls without a decrease in the resistance to crushing under vertical load. The shape at the top of the side wall may be modified so as to make it, for example, in the form of an ellipse, with slight modification of the score lines and the use of a properly shaped mandrel in setting up the container. The top closure or end wall in this and also in the other forms of the container which are illustrated may be made of metal, plastic, paperboard or any other suitable material and either removably or permanently secured to the top edge of the side wall by interlocking or crimped edge connecting means, as desired.

The connecting glue flaps 28, 28' and 29, 29 in the form of the container shown in FIGURE 1 and the corresponding glue flaps in the other forms of the container which are shown in FIGURES 5 and 9 may be integrally hinged to the bottom forming edges of the side wall panels and secured to either the inside or the outside face of the bottom wall forming panel.

While particular materials and specific structural details are referred to in describing the forms of the container illustrated, it will be understood that other suitable materials and equivalent structural details may be resorted to within the spirit of the invention.

1 claim:

1. A cylindrical container fabricated from a one piece plank of foldable sheet material comprising a side wall formed of a pair of generally rectangular panels, the end margins of which are overlapped and adhesively secured, so as to form a cylindrical body having a cross section at the top which has a perimeter defined at least in part by outwardly curved lines and a. cross section at the bottom which has a perimeter defined by a connected series of straight hinge lines, a bottom wall integrally connected on parallel straight hinge lines to oppositely disposed bottom edges of the side wall forming panels, said bottom wall having integral glue flaps connected thereto on straight hinge lines which extend between corresponding ends of the straight hinge lines connecting said bottom wall to the bottom edges of said side wall forming panels, said glue flaps being adhesively connected to the bottom margins of the side wall forming panels and the side wall forming panels having score lines in their bottom margins which extend in upwardly bowed relation a relatively small distance above each of said bottom hinge lines so as to form in said side wall bottom margin portions which are in flat planes adjoining each other.

2. A cylindrical container as recited in claim 1, and the bottom wall of said carton having a maximum diameter which is less than the cross secti na1 diameter of the body at the open end thereof and the portions of the side Wall adjacent the bottom edges thereof which are disposed in flat planes tapering outwardly and upwardly in the direction of the top of the container.

3. A cylindrical container as recited in claim 1, and said glue flaps corresponding approximately in size and shape to the portions of the side Wall extending between 'the bot-tom hinge lines and the associated upwardly bowed score lines.

4. A cylindrical container as recited in claim 1, and relatively short, axially extending corner forming score lines connecting the ends of each upwardly bowed score line with the ends of the associated straight hinge line in the bottom edge of the container.

5. A container comprising a side wall formed of a pair of generally rectangular panels, the ends of which are overlapped and secured so as to form a tubular body which has a cross section at the top end with a perimeter defined at least in part by outwardly curved lines and a cross section at the bottom with a perimeter defined by a series of connected straight lines, a bottom wall having oppositely disposed edge portions integrally connected on parallel straight hinge lines to bottom edge portions of the side wall panels, said bottom wall having other edge portions connected by glue flaps to bottom edge portions of the side wall panels, said glue flaps hinging on straight lines which lie between corresponding ends of the straight hinge lines connecting said bot-tom wall to the side wall panels, said side wall panels having score lines which extend in upwardly bowed relation relative to the hinged connection thereof to the bottom wall and define at least in part the upper edges of side wall portions which are in fiat planes, which extend a relatively small distance immediately above said hinged connections and which merge at their upper edges into outwardly curved portions of said side wall.

6. A container, as recited in claim 5, and the bottom wall of said container being rectangular with dimensions no less than the corresponding cross sectional dimensions at the top end of the container, the top end having a cross sectional configuration with the perimeter defined by a pair of oppositely disposed, parallel, straight lines and connecting outwardly bowed lines extending between corresponding ends of said straight lines.

7. A blank of foldable sheet material which is generally rectangular and which is cut and scored f r fabricating a tubular container having an integral bottom wall, said blank being divided by longitudinally spaced, transverse lines into a central section and two end sections, said end section-s being adapted to be connected so as to form the side wall of the container, when set up, said central section being cut away on opposite sides of the blank so as to provide a center bottom wall forming panel defined by hinge forming central portions of said transverse dividing lines and bottom edge forming portions extending along straight lines and connecting corresponding ends of said hinge forming portions, and bottom edge connecting flaps formed in the blank areas on opposite sides of said bottom wall forming panel, which flaps are separated from said bottom wall forming panel by straight hinge lines coinciding with edge portions of the bottom wall forming panel, which straight hinge lines extend between the ends of the hinge 'forrning central porti ns of said transverse dividing lines, and said end sections each having a score line adjacent the transverse dividing line which is bowed in the direction of the free end of said section.

8. A blank as recited in claim 7, and the end sections of said blank having a series of score lines in the margins adjacent said transverse dividing lines which are each bowed outwardly toward the associated end of the blank and each of which has its ends spaced apart a distance corresponding approximately to the length of the hinge forming score lines connecting the central section and the end sections of the blank.

9. A blank as recited in claim 7, and said connecting flaps being of a size and shape corresponding approximately to the size and shape of the portion of the side wall section which extends between an outwardly bowed score line in said side wall section and the portion of the transverse dividing line which is disposed opposite said bowed score line.

10. A blank as recited in claim 9, and the outwardly bowed score lines in said side wall sections having the end portion thereof spaced from said transverse dividing lines in the direction of the ends of the blank with the bowed score lines which are opposite the hinge forming score lines which connect the side wall forming sections of the blank and the bottom wall forming rpanel having the ends thereof connected to the corresponding ends of said hinge forming score lines by relatively short longitudinally extending hinge forming score lines.

11. A container fabricated from a blank of foldable sheet material comprising a side wall formed of a pair of generally rectangular panels, margins of which are overlapped and connected so as to form a tubular body which 'has a cross section at the top end with a perimeter defined at least in part by outwardly curved lines and a cross section at the bottom with a perimeter defined by a series of connected straight lines, a bottom wall having edge portions integrally connected on oppositely disp sed, parallel straight hinge lines to bottom edge portions of the side wall panels, said bottom wall having other edge portions joined by connecting flaps to bottom edge portions of the side wall panels, said connecting fiaps hinging on straight lines which extend between corresponding ends of the straight hinge lines connecting said bottom wall to the side wall panels, said side Wall panels having score lines in the bottom portions thereof which curve upwardly from points adjacent the ends of said straight bottom hinge lines and inwardly in the direction of the center of said hinge lines and which define at least in part the upper edges of fiat side wall portions which extend upwardly a relatively small distance above said hinged connections and merge at their upper edges into outwardly curved portions of said side wall.

References Cited UNITED STATES PATENTS 1,009,463 11/ 1911 Bloomer.

1,892,715 -1/1937 Wellman 229-21 X 2,168,186 8/1939 Adamson 229-21 2,232,088 2/1941 Waters 229-21 X 2,240,599 5/1943 Amberg 229-1.5 2,323,287 7/ 1943' Amberg 229-15 2,385,898 10/1945 Waters 229-15 2,815,164 12/1957 Painter 229-8 X 2,925,208 2/1960 Wood 229-15 3,269,640 8/1966 Arneson 229-8 X DAVIS T. MOOREHEAD, Primary Examiner. 

1. A CYLINDRICAL CONTAINER FABRICATED FROM A ONE PIECE PLANK OF FOLDABLE SHEET MATERIAL COMPRISING A SIDE WALL FORMED OF A PAIR OF GENERALLY RECTANGULAR PANELS, THE END MARGINS OF WHICH ARE OVERLAPPED AND ADHESIVELY SECURED, SO AS TO FORM A CYLINDRICAL BODY HAVING A CROSS SECTION AT THE TOP WHICH HAS A PERIMETER DEFINED AT LEAST IN PART BY OUTWARDLY CURVED LINES AND A CROSS SECTION AT THE BOTTOM WHICH HAS A PERIMETER DEFINED BY A CONNECTED SERIES OF STRAIGHT HINGE LINES, A BOTTOM WALL INTEGRALLY CONNECTED ON PARALLEL STRAIGHT HINGE LINES TO OPPOSITELY DISPOSED BOTTOM EDGES OF THE SIDE WALL FORMING PANELS, SAID BOTTOM WALL HAVING INTEGRAL GLUE FLAPS CONNECTED THERETO ON STRAIGHT HINGE LINES WHICH EXTEND BETWEEN CORRESPONDING ENDS OF THE STRAIGHT HINGE LINES CONNECTING SAID BOTTOM WALL TO THE BOTTOM EDGES OF SAID SIDE WALL FORMING PANELS, SAID GLUE FLAPS BEING ADHESIVELY CONNECTED TO THE BOTTOM MARGINS OF THE SIDE WALL FORMING PANELS AND THE SIDE WALL FORMING PANELS HAVING SCORE LINES IN THEIR BOTTOM MARGINS WHICH EXTEND IN UPWARDLY BOWED RELATION A RELATIVELY SMALL DISTANCE ABOVE EACH OF SAID BOTTOM HINGE LINES SO AS TO FORM IN SAID SIDE WALL BOTTOM MARGIN PORTIONS WHICH ARE IN FLAT PLANES ADJOINING EACH OTHER. 